a
Fatah Halab (English: Aleppo Conquest) also includes groups from the FSA.b
Only in Aleppo governorate
against the SDF
and ISIL
but not against the governmentc
Since September 2016, the United States also fights alongside a rebel contingent solely against ISIL, not against the Syrian government or Rojava.[117]

d
Number includes Kurdish and ISIL fighters, whose deaths are also listed in their separate columns.[118][119][91]

Syrian opposition groups formed the Free Syrian Army (FSA) and seized control of the area surrounding
Aleppo
and parts of southern Syria. Over time, factions of the Syrian opposition
split from their original moderate position to pursue an Islamist
vision for Syria, as al-Nusra Front and ISIL.[126]
In the north, Syrian government forces largely withdrew to fight the FSA, allowing the KurdishYPG
to move in and proclaim de facto
autonomy.[127]
In 2015 the YPG joined forces with Arab, Assyrian, Armenian and some Turkmen groups, forming the Syrian Democratic Forces, while most Turkmen groups remained with the FSA.[128]

Syria became an independent republic in 1946, although democratic rule ended with a coup in March 1949, followed by two more coups the same year.[136][137]
A popular uprising
against military rule in 1954 saw the army transfer power to civilians. From 1958 to 1961, a brief union with Egypt
replaced Syria's parliamentary system with a highly centralized presidential regime.[138]
The secular Ba'ath Syrian Regional Branch
government came to power through a successful coup d'état
in 1963. For the next several years Syria went through additional coups and changes in leadership.[139]

In 2000,
Bashar al-Assad
took over as President of Syria upon Hafez al-Assad's death. He and his wife Asma al-Assad, a Sunni Muslim born and educated in Britain,[143]
initially inspired hopes for democratic reforms. The Damascus Spring, a period of social and political debate, took place between July 2000 and August 2001.[144]
The Damascus Spring largely ended in August 2001 with the arrest and imprisonment of ten leading activists who had called for democratic elections and a campaign of civil disobedience.[145]
In the opinion of his critics, Bashar Assad had failed to deliver on promised reforms.[146]

The Assad family is mixed. Bashar himself is married to a Sunni, with whom he has several children. His parents belong to the minority Alawite sect that comprises an estimated 12% of the total population.[149]
Alawites control Syria's security apparatus.[150][151]

Syrian Kurds, an ethnic minority making up approximately 9% of the population, have been angered by ethnic discrimination and the denial of their cultural and linguistic rights, as well as the frequent denial of their citizenship.[152][153]

Socioeconomic inequality increased significantly after
free market
policies were initiated by Hafez al-Assad in his later years, and it accelerated after Bashar al-Assad came to power. With an emphasis on the service sector, these policies benefited a minority of the nation's population, mostly people who had connections with the government, and members of the Sunni merchant class of Damascus and Aleppo.[157]

This coincided with the most intense drought ever recorded in Syria. It lasted from 2007 to 2010 and resulted in widespread crop failure, an increase in food prices and a mass migration of farming families to urban centers.[158]
The drought is considered to have been a consequence of, and exacerbated by a warming climate in the region, a consequence of global warming.[159][160]
Syria had also received in the same period around 1.5 million refugees from Iraq. By 2011, Syria was facing steep rises in the prices of commodities and a clear deterioration in the national standard of living.[161]
The country also faced particularly high youth unemployment rates.[162]

At the start of the war, discontent against the government was said to be the strongest in Syria's poor areas, predominantly among conservative Sunnis.[157]
These included cities with high poverty rates, such as Daraa
and Homs
and the poorer districts of large cities.

The human rights situation in Syria had long been the subject of harsh critique from global organizations.[163]
The rights of free expression,
association
and assembly
were strictly controlled in Syria even before the uprising.[164]
The country was under emergency rule
from 1963 until 2011 and public gatherings of more than five people were banned.[165]
Security forces had sweeping powers of arrest and detention.[166]

Authorities have harassed and imprisoned
human rights activists
and other critics of the government, who were often detained indefinitely and tortured
while under prison-like conditions.[164]
Women and ethnic minorities
faced discrimination in the public sector.[164]
Thousands of Syrian Kurds
were denied citizenship in 1962 and their descendants were labeled "foreigners".[167]
A number of riots in 2004 prompted increased tension in Syrian Kurdistan,[168][169]
and there have been occasional clashes between Kurdish protesters and security forces ever since.

Despite hopes for democratic change with the 2000
Damascus Spring, Bashar al-Assad was widely regarded as having failed to implement any improvements. A
Human Rights Watch
report issued just before the beginning of the 2011 uprising stated that he had failed to substantially improve the state of human rights since taking power.[170]

The protests began on 15 March 2011, when protesters marched in the capital of
Damascus, demanding democratic reforms and the release of political prisoners. Security forces retaliated by opening fire on the protesters,[171]
and according to witnesses who spoke to the BBC, the government forces detained six of them.[172]
The protest was triggered by the arrest of a boy and his friends by the government for writing in graffiti, "The people want the fall of the regime", in the city of
Daraa.[171][173]
Writer and analyst Louai al-Hussein, referencing the Arab Spring
ongoing at that time, wrote that "Syria is now on the map of countries in the region with an uprising".[173]
On 20 March, the protesters burned down a Ba'ath Party
headquarters and "other buildings". The ensuing clashes claimed the lives of seven police officers[174]
and 15 protesters.[175]
Ten days later in a speech, President Bashar al-Assad
blamed "foreign conspirators" pushing Israeli propaganda for the protests.[176]

Until 7 April, the protesters predominantly demanded democratic reforms, release of political prisoners, an increase in freedoms, abolition of the emergency law and an end to corruption. After 8 April, the emphasis in demonstration slogans shifted slowly towards a call to overthrow the Assad government. Protests spread. On Friday 8 April, they occurred simultaneously in ten cities. By Friday 22 April, protests occurred in twenty cities. On 25 April, the
Syrian Army
initiated a series of large-scale deadly military attacks on towns with tanks, infantry carriers, and artillery, leading to hundreds of civilian deaths.[citation needed]
By the end of May 2011, 1,000 civilians[177]
and 150 soldiers and policemen[178]
had been killed and thousands detained;[179]
among the arrested were many students, liberal activists and human rights advocates.[180]

Significant armed rebellion against the state began on 4 June in
Jisr al-Shugur, a city in
Idlib Governorate
near the Turkish border, after security forces stationed on a post office roof fired at a funeral demonstration.[citation needed]
The mourners set fire to the building, killing eight security officers, and then overran a police station, seizing weapons from it. Violence continued and escalated over the following days. Unverified reports claim that a portion of the security forces in Jisr defected after secret police and intelligence officers executed soldiers who had refused to fire on civilians.[181]
Later, more protesters in Syria took up arms, and more soldiers defected to protect protesters.

On 29 July 2011, seven defecting Syrian officers formed the
Free Syrian Army
(FSA), composed of defected Syrian Armed Forces
officers and soldiers, aiming "to bring this regime (the Assad government) down" with united opposition forces.[182][183]
On 31 July, a nationwide crackdown nicknamed the "Ramadan Massacre" resulted in the death of at least 142 people and hundreds of injuries.[184]

On 23 August, a coalition of anti-government groups called the
Syrian National Council
was formed. The council, based in Turkey, attempted to organize the opposition. The opposition, however, including the FSA, remained a fractious collection of political groups, longtime exiles, grassroots organizers and armed militants divided along ideological, ethnic and/or sectarian lines.[185]

Throughout August, Syrian forces stormed major urban centres and outlying regions, and continued to attack protests. On 14 August, the
Siege of Latakia
continued as the Syrian Navy
became involved in the military crackdown for the first time. Gunboats
fired heavy machine guns
at waterfront districts in Latakia, as ground troops and security agents backed by armour stormed several neighbourhoods.[186]
The Eid ul-Fitr
celebrations, which began at the end of August, were muted after security forces fired on protesters gathered in Homs, Daraa, and the suburbs of Damascus.[187]

By September 2011, organized units of Syrian rebels were engaged in an active insurgency campaign in many different parts of Syria. A major confrontation between the FSA and the Syrian armed forces
occurred in Rastan. From 27 September to 1 October, Syrian government forces, backed by tanks and helicopters, led a major offensive on the town of
Al-Rastan
in Homs Governorate, in order to drive out army defectors.[188]
The 2011 battle of Rastan between the government forces and the FSA was the longest and most intense action up until that time. After a week of fighting, the FSA was forced to retreat from Rastan.[189]
To avoid government forces, the leader of the FSA, Colonel Riad Asaad, retreated to Turkey.[190]
Many of the rebels fled to the nearby city of Homs.[191]

In October 2011, clashes between government and army units which had defected were being reported fairly regularly. During the first week of the month, sustained
clashes were reported in Jabal al-Zawiya
in the mountainous regions of Idlib Governorate. Syrian rebels also captured most of Idlib city.[193]
In mid-October, clashes in Idlib Governorate
included the city of Binnish
and the town of Hass
in the governorate near the mountain range of Jabal al-Zawiya.[194][195]
In late October, clashes occurred in the northwestern town of Maarrat al-Nu'man
between government forces and defected soldiers at a roadblock on the edge of the town, and near the Turkish border, where 10 security agents and a deserter were killed in a bus ambush.[196]
It was not clear if the defectors linked to these incidents were connected to the FSA.[197]

According to defectors, in 2011 the Syrian government intentionally released imprisoned
Islamist
militants and provided them with arms "in order to make itself the least bad choice for the international community, though the "claims could not be independently verified" of the one defector quoted, who "did not have documents supporting" the allegations."[198][199]

On 19 October 2011 U.S. media reported that "large crowds of Syrians rallied in the northern city of Aleppo in support of the government of President Bashar al-Assad". The Syrian government estimated over a million pro-government demonstrators, while others estimated crowds at least "tens of thousands" comparable in size to a pro-government rally "a week earlier in Damascus."[200][201]

In early November, clashes between the FSA and security forces in Homs escalated as the
siege
continued. After six days of bombardment, the Syrian Army stormed the city on 8 November, leading to heavy street fighting in several neighborhoods. Resistance in Homs was significantly greater than that seen in other towns and cities, and some in opposition have referred to the city as the "Capital of the Revolution". Unlike events in Deraa and Hama, operations in Homs have thus far failed to quell the unrest.[191]

November and December 2011 saw increasing rebel attacks, as opposition forces grew in number. In the two months, the FSA launched deadly attacks on an
air force intelligence complex
in the Damascus suburb of Harasta, the Ba'ath Syrian Regional Branch youth headquarters in
Idlib Governorate, Syrian Regional Branch offices in Damascus,
an airbase in Homs Governorate, and an intelligence building in Idlib.[202]
On 15 December, opposition fighters ambushed checkpoints and military bases around Daraa, killing 27 soldiers, in one of the largest attacks yet on security forces.[203]
The opposition suffered a major setback on 19 December, when a failed defection in Idlib Governorate lead to 72 defectors killed.[204]

In December 2011, former counter-terrorism specialist and CIA military intelligence officer
Philip Giraldi
asserted that already "unmarked NATO warplanes are arriving at Turkish military bases close to the Syrian border, delivering weapons from the late Muammar Gaddafi’s arsenals as well as volunteers from the Libyan Transitional National Council who are experienced in pitting local volunteers against trained soldiers" and that in addition, " French
and British
special forces trainers are on the ground, assisting the Syrian rebels while the CIA and U.S. Spec Ops
are providing communications equipment and intelligence to assist the rebel cause." Giraldi stated that "CIA analysts are skeptical regarding the march to war" for reasons including that "the frequently cited U.N. report that more than 3,500 civilians have been killed by Assad’s soldiers is based largely on rebel sources and is uncorroborated" while cautioning in The American Conservative that "Americans should be concerned about what is happening in Syria... It threatens to become another undeclared war like Libya but much, much worse."[205]

In January 2012, Assad began using large-scale artillery operations against the insurgency, which led to the destruction of many civilian homes due to indiscriminate shelling.[206][207]
By this time, daily protests had dwindled, eclipsed by the spread of armed conflict.[208]
January saw intensified clashes around the suburbs of Damascus, with the Syrian Army use of tanks and artillery becoming common.
Fighting in Zabadani
began on 7 January when the Syrian Army stormed the town in an attempt to rout out FSA presence. After the first phase of the battle ended with a ceasefire on 18 January, leaving the FSA in control of the town,[209]
the FSA launched an offensive into nearby Douma.[210]Fighting in the town
lasted from 21 to 30 January, before the rebels were forced to retreat as result of a government counteroffensive. Although the Syrian Army managed to retake most of the suburbs, sporadic fighting continued.[211]Fighting erupted in Rastan
again on 29 January, when dozens of soldiers manning the town's checkpoints defected and began opening fire on troops loyal to the government. Opposition forces gained complete control of the town and surrounding suburbs on 5 February.[212]

On 3 February, the Syrian Army launched
a major offensive
in Homs to retake rebel-held neighborhoods. In early March, after weeks of artillery bombardments and heavy street fighting, the Syrian Army eventually captured the district of Baba Amr, a rebel stronghold. The Syrian Army also captured the district of Karm al-Zeitoun by 9 March, where activists said that government forces killed 47 women and children. By the end of March, the Syrian Army retook control of half a dozen districts, leaving them in control of 70 percent of the city.[213]
By 14 March, Syrian troops successfully ousted insurgents
from the city of Idlib after days of fighting.[214]
By early April, the estimated death toll of the conflict, according to activists, reached 10,000.[215]

Kofi Annan
was acting as UN–Arab LeagueJoint Special Representative for
Syria. His peace plan provided for a ceasefire, but even as the negotiations for it were being conducted, Syrian armed forces attacked a number of towns and villages, and summarily executed scores of people.[216]:11
Incommunicado detention, including of children, also continued.[217]
In April, Assad began employing attack helicopters
against rebel forces.[206]

On 12 April, both sides, the Syrian Government and rebels of the FSA entered a UN-mediated ceasefire period. It was a failure, with infractions of the ceasefire by both sides resulting in several dozen casualties. Acknowledging its failure, Annan called for Iran to be "part of the solution", though the country has been excluded from the Friends of Syria initiative.[218]
The peace plan practically collapsed by early June and the UN mission was withdrawn from Syria. Annan officially resigned in frustration on 2 August 2012.[219]

Following the
Houla massacre
of 25 May 2012, in which 108 people were summarily executed and the consequent FSA ultimatum to the Syrian government, the ceasefire practically collapsed, as the FSA began nationwide offensives against government troops. On 1 June, President Assad vowed to crush the anti-government uprising.[220]

On 5 June,
fighting broke out in Haffa
and nearby villages in the coastal governorate of Latakia Governorate. Government forces were backed by
helicopter gunships
in the heaviest clashes in the governorate since the revolt began. Syrian forces seized the territory following days of fighting and shelling.[221]
On 6 June 78 civilians were killed in the Al-Qubeir massacre. According to activist sources, government forces started by shelling the village before the
Shabiha
militia moved in.[222]
The UN observers headed to Al-Qubeir in the hope of investigating the alleged massacre, but they were met with a roadblock and small arms fire and were forced to retreat.[223]

On 12 June 2012, the UN for the first time officially proclaimed Syria to be in a state of civil war.[224]
The conflict began moving into the two largest cities, Damascus and Aleppo. In both cities, peaceful protests – including a general strike by Damascus shopkeepers and a small strike in Aleppo were interpreted as indicating that the historical alliance between the government and the business establishment in the large cities had become weak.[225]

On 22 June, a Turkish
F-4 fighter jet
was shot down by Syrian government forces, killing both pilots. Syria and Turkey disputed whether the jet had been flying in Syrian or international
airspace
when it was shot down. Despite Turkish Prime Minister Recep Tayyip Erdoğan's vows to retaliate harshly against Assad's government, no such intervention materialised. Bashar al-Assad publicly apologised for the incident. By 10 July, rebel forces had captured most of the city of
Al-Qusayr, in
Homs Governorate, after weeks of fighting.[226]
By mid-July, rebels had captured the town of Saraqeb, in Idlib Governorate.[227]

In mid-July, rebel forces
attacked Damascus
and were repelled in two weeks, although fighting still continued in the outskirts. After this, the focus shifted to the
battle for control of Aleppo.[233]
On 25 July, multiple sources reported that the Assad government was using fighter jets to attack rebel positions in Aleppo and Damascus,[234]
and on 1 August, UN observers in Syria witnessed government fighter jets firing on rebels in Aleppo.[235]
In early August, the Syrian Army recaptured Salaheddin district, an important rebel stronghold in Aleppo. In August, the government began using fixed-wing warplanes against the rebels.[206][207]

On 19 July, Iraqi officials reported that the FSA had gained control of all four border checkpoints between Syria and Iraq, increasing concerns for the safety of Iraqis trying to escape the violence in Syria.[236]
On 19 September, rebel forces seized a border crossing between Syria and Turkey in Ar-Raqqah Governorate. It was speculated that this crossing could provide opposition forces with strategic and logistical advantages due to Turkish support of the rebels, whose headquarters subsequently relocated from southern Turkey into northern Syria.[237]

On 6 September 2012 Kurdish activists reported that 21 civilians were killed in the Kurdish neighborhood of Sheikh Maqsud in
Aleppo, when the Syrian Army shelled the local mosque and its surroundings. Despite the district being neutral during the
Battle of Aleppo
and free of government and FSA clashes, local residents believed that the district was shelled as retaliation for sheltering anti-government civilians from other parts of the city. In a statement released shortly after the deaths, the Kurdish People's Protection Units (YPG) vowed to retaliate.[241]
A few days later, Kurdish forces killed 3 soldiers in Afrin
(Kurdish:
Efrîn‎) and captured a number of other government soldiers in
Ayn al-Arab
(Kurdish:
Kobanî‎) and
Al-Malikiyah
(Kurdish:
Dêrika Hemko‎) from where they drove the remaining government security forces. It was also reported that the government had begun to arm Arab tribes around
Qamishli
in preparation for a possible confrontation with Kurdish forces, who still did not completely control the city.[242]

At least 8 government soldiers were killed and 15 wounded by a car bomb in the al-Gharibi district of
Qamishli
on 30 September 2012. The explosion targeted the Political Security branch.[243]

After Brahimi's ceasefire agreement ended on 30 October, the Syrian military expanded its aerial bombing campaign in Damascus. A bombing of the Damascus district of Jobar was the first instance of a
fighter jet
being used to bomb Damascus. The following day, Gen. Abdullah Mahmud al-Khalidi, a Syrian Air Force commander, was assassinated by opposition gunmen in the Damascus district of Rukn al-Din.[244]
In early November 2012, rebels made significant gains in northern Syria. The rebel capture of Saraqib
in Idlib Governorate, which lies on the M5 highway, further isolated Aleppo.[245]
Due to insufficient anti-aircraft weapons, rebel units attempted to nullify the government's air power by destroying landed helicopters and aircraft on air bases.[246]
On 3 November, rebels launched an attack on the Taftanaz air base.[247]

On 18 November, rebels
took control of
Base 46 in the Aleppo Governorate, one of the Syrian Army's largest bases in northern Syria, after weeks of intense fighting. Defected General Mohammed Ahmed al-Faj, who commanded the assault, stated that nearly 300 Syrian troops had been killed and 60 had been captured, with rebels seizing large amounts of heavy weapons, including tanks.[248]
On 22 November, rebels captured the Mayadeen
military base in the country's eastern Deir ez-Zor Governorate. Activists said this gave the rebels control of a large amount of territory east of the base, stretching to the Iraqi border.[249]
On 29 November, at approximately 10:26 UTC, the Syrian Internet and phone service was shut off for a two-day period.[250]
Syrian government sources denied responsibility and blamed the blackout on fiber optic
lines near Damascus becoming exposed and damaged;[251]Edward Snowden
in August 2014 claimed that this Internet breakdown had been caused, though unintendedly, by hackers of the NSA
during an operation to intercept Internet communication in Syria.[252]

In mid-December 2012, American officials said that the Syrian military had fired
Scud
ballistic missiles at rebel fighters inside Syria. Reportedly, six Scud missiles were fired at the Sheikh Suleiman base north of Aleppo, which rebel forces had occupied. It is unclear whether the Scuds hit the intended target.[253]
The government denied this claim.[254]
Later that month, a further Scud attack took place near Marea, a town north of Aleppo near the Turkish border. The missile appeared to have missed its target.[253]
That same month, the British Daily Telegraph
reported that the FSA had now penetrated into Latakia Governorate's coast through Turkey.[255]
In late December, rebel forces pushed further into Damascus, taking control of the adjoining Yarmouk
and Palestine refugee camps, pushing out pro-government Popular Front for the Liberation of Palestine-General Command
fighters with the help of other factions.[256]
Rebel forces launched an offensive
in Hama Governorate, later claiming to have forced army regulars to evacuate several towns and bases,[257]
and stating that "three-quarters of western rural Hama is under our control."[258]
Rebels also captured the town of Harem near the Turkish border in Idlib Governorate, after weeks of heavy fighting.[259]

On 11 January 2013, Islamist groups, including al-Nusra Front, took full control of the
Taftanaz
air base in the Idlib Governorate, after weeks of fighting. The air base was often used by the Syrian military to carry out helicopter raids and deliver supplies. The rebels claimed to have seized helicopters, tanks and multiple rocket launchers, before being forced to withdraw by a government counter-attack. The leader of the al-Nusra Front said the amount of weapons they took was a "game changer".[260]
On 11 February, Islamist rebels captured the town of Al-Thawrah
in Ar-Raqqah Governorate
and the nearby Tabqa Dam, Syria's largest dam and a key source of
hydroelectricity.[261][262]
The next day, rebel forces took control of Jarrah air base, located 60 kilometres (37 mi) east of Aleppo.[263]
On 14 February, fighters from al-Nusra Front took control of Shadadeh, a town in Al-Hasakah Governorate
near the Iraqi border.[264]

On 20 February, a
car bomb
exploded in Damascus near the Ba'ath Syrian Regional Branch headquarters, killing at least 53 people and injuring more than 235.[265]
None of the groups claimed responsibility.[266]
On 21 February, the FSA in Quasar began shelling Hezbollah positions in Lebanon. Prior to this, Hezbollah had been shelling villages near Quasar from within Lebanon. A 48-hour ultimatum was issued by a FSA commander on 20 February, warning the militant group to stop the attacks.[267]

On 2 March, intense clashes between rebels and the Syrian Army erupted in the city of Raqqah, with many reportedly killed on both sides.[268]
On the same day, Syrian troops regained several villages near Aleppo.[269]
By 3 March, rebels had overrun Raqqah's central prison, allowing them to free hundreds of prisoners, according to the SOHR.[270]
The SOHR also stated that rebel fighters were now in control of most of an Aleppo police academy
in Khan al-Asal, and that over 200 rebels and government troops had been killed fighting for control of it.[271]

By 6 March, the rebels had captured the city of Raqqah, effectively making it the first provincial capital to be lost by the Assad government. Residents of Raqqah toppled a bronze statue of his late father Hafez al-Assad in the centre of the city. The rebels also seized two top government officials.[272]
On 18 March, the Syrian Air Force attacked rebel positions in Lebanon for the first time. The attack occurred at the Wadi al-Khayl Valley area, near the town of Arsal.[273]
On 21 March, a suspected suicide bombing in the Iman Mosque in Mazraa district killed as many as 41 people, including the pro-Assad Sunni cleric, Sheikh Mohammed al-Buti.[274]
On 23 March, several rebel groups seized the 38th division air defense base in southern Daraa Governorate near a highway linking Damascus to Jordan.[275]
On the next day, rebels captured a 25 km strip of land near the Jordanian border, which included the towns of Muzrib, Abdin, and the al-Rai military checkpoint.[276]

On 25 March, rebels launched one of their heaviest bombardments of Central Damascus since the revolt began. Mortars reached Umayyad Square, where the Ba'ath Party headquarters, Air Force Intelligence and state television are located.[277]
On 26 March, near the Syrian town of al-Qusayr, rebel commander Khaled al Hamad, who commands the Al Farooq al-Mustakilla Brigade and is also known by his nom de guerre Abu Sakkar, ate the heart and liver of a dead soldier and said "I swear to God, you soldiers of Bashar, you dogs, we will eat from your hearts and livers! O heroes of Bab Amr, you slaughter the Alawites and take out their hearts to eat them!" in an apparent attempt to increase sectarianism.[278][279]
Video of the event emerged two months later and resulted in considerable outrage, especially from Human Rights Watch which classified the incident as a war crime. According to the BBC, it was one of the most gruesome videos to emerge from the conflict to-date.[280]
On 29 March, rebels captured the town of Da'el
after fierce fighting. The town is located in Daraa Governorate, along the highway connecting Damascus to Jordan.[281]
On 3 April, rebels captured a military base near the city of Daraa.[282]

In mid-January 2013, as clashes re-erupted between rebels and Kurdish forces in Ras al-Ayn, YPG forces moved to expel government forces from oil-rich areas in Hassakeh Province.[283]
Clashes broke out from 14 to 19 January[284]
between the army and YPG fighters in the Kurdish village of Gir Zîro (Tall Adas), near al-Maabadah
(Kurdish:
Girkê Legê‎), where an army battalion of around 200 soldiers had been blockaded[285]
since 9 January.[284]
YPG forces claimed to have expelled government after the clashes.[283]
One soldier was reportedly killed and another eight injured, while seven were captured (later released[284]) and 27 defected.[285]
Fighting at the oil field near Gir Zîro ended on 21 January, when government forces withdrew after receiving no assistance from Damascus.[286]
In Rumeilan, directly west of al-Maabadah, another 200 soldiers had been surrounded by YPG forces, and 10 soldiers were reported to have defected.[283]

From 8 to 11 February,[287]
heavy clashes broke out between the YPG and government troops in the PYD/YPG-held district Ashrafiyah where, according to SOHR, at least 3 soldiers and 5 pro-government militiamen were killed. The fighting followed deadly shelling on 31 January on Ashrafiyah, in which 23[288]
civilians were killed after FSA units moved into the Kurdish sector of Aleppo.[289]
According to its own reports, the YPG lost 7 of its members in the fighting, while also claiming that 48 soldiers were killed and 22 captured,[288]
and a further 70[290]
injured.

In early March, YPG forces established full control of oil fields and installations in north-east Syria after government forces posted there surrendered. Also, YPG assaulted government forces and took control of the towns of
Tall ʿAdas, which is adjacent to Rumeilan oil fields, and
Al-Qahtaniya
(Kurdish:
Tirbespî‎).[291]

On 17 April, government forces breached a six-month rebel blockade in Wadi al-Deif, near Idlib. Heavy fighting was reported around the town of Babuleen after government troops attempt to secure control of a main highway leading to Aleppo. The break in the siege also allowed government forces to resupply two major military bases in the region which had been relying on sporadic airdrops.[292]
On 18 April, the FSA took control of Al-Dab'a Air Base near the city of al-Qusayr.[293]
The base was being used primarily to garrison ground troops. Meanwhile, the Syrian Army re-captured the town of Abel. The SOHR said the loss of the town would hamper rebel movements between al-Qusayr and Homs city. The capture of the airport would have relieved the pressure on the rebels in the area, but their loss of Abel
made the situation more complicated.[294]
The same day, rebels reportedly assassinated Ali Ballan, who was a government employee, in the Mazzeh district of Damascus.[295]
On 21 April, government forces captured the town of Jdaidet al-Fadl, near Damascus.[296]

In April, government and
Hezbollah
forces launched an offensive
to capture areas near al-Qusayr. On 21 April, pro-Assad forces captured the towns of Burhaniya, Saqraja and al-Radwaniya near the Lebanese border.[297][298]
By this point, eight villages had fallen to the government offensive in the area.[299]
On 24 April, after five weeks of fighting, government troops re-took control of the town of Otaiba, east of Damascus, which had been serving as the main arms supply route from Jordan.[300]
Meanwhile, in the north of the country, rebels took control of a position on the edge of the strategic Mennagh Military airbase, on the outskirts of Aleppo. This allowed them to enter the airbase after months of besieging it.[301]

On 2 May, government forces captured the town of
Qaysa
in a push north from the city's airport. Troops also retook the Wadi al-Sayeh central district of Homs, driving a wedge between two rebel strongholds.[302]
SOHR reported a massacre
of over 100 people by the Syrian Army in the coastal town of Al Bayda, Baniyas. However, this could not be independently verified due to movement restrictions on the ground.[303]
Yet the multiple video images that residents said they had recorded – particularly of small children, were so shocking that even some government supporters rejected Syrian television's official version of events, that the army had simply "crushed a number of terrorists."[304]

On 15 June, the Syrian Army captured the Damascus suburb of Ahmadiyeh near the city's airport.[305][306]
On 22 June, the Syrian Army captured the rebel stronghold town of Talkalakh.[307][308]

On 28 June, rebel forces captured a major military checkpoint in the city of Daraa.[309]
On 12 July FSA reported that one of its commanders, Kamal Hamami, had been killed by Islamists a day before. The rebels declared that the assassination by the Islamic State of Iraq and Levant, was tantamount to a declaration of war.[310]
On 17 July, FSA forces took control of most of the southern city of Nawa
after seizing up to 40 army posts stationed in the city.[311]
On 18 July, Kurdish YPG forces secured control of the northern town of Ras al-Ain, after days of fighting with the al-Nusra Front.[312]
In the following three months, continued fighting between Kurdish and mainly jihadist rebel forces led to the capture of two dozen towns and villages in Hasakah Governorate
by Kurdish fighters,[313]
while the Jihadists made limited gains in Aleppo and Raqqah governorates after they turned on the Kurdish rebel group Jabhat al-Akrad
over its relationship with the YPG. In Aleppo Governorate, Islamists massacred the Kurds leading to a mass migration of civilians to the town of Afrin.[314]

On 22 July, FSA fighters seized control of the western Aleppo suburb of
Khan al-Asal. The town was the last government stronghold in the western portion of Aleppo Governorate.[315]
On 25 July, the Syrian Army secured the town of al-Sukhnah, after expelling the al-Nusra Front.[316]
On 27 July, after weeks of fighting and bombardment in Homs, the Syrian Army captured the historic Khalid ibn al-Walid Mosque,[317]
and two days later, captured the district of Khaldiyeh.[318]

On 4 August, around 10 rebel brigades, launched
a large-scale offensive
on the government stronghold of Latakia Governorate. Initial attacks by 2,000 opposition members seized as many as 12 villages in the mountainous area. Between 4 and 5 August 20 rebels and 32 government soldiers and militiamen had been killed in the clashes. Hundreds of Alawite villagers fled to Latakia. By 5 August, rebel fighters advanced to 20 kilometers from Qardaha, the home town of the Assad family.[319][320]
However, in mid-August, the military counter-attacked and recaptured all of the territory previously lost to the rebels in the coastal region during the offensive.[321][322]
A Syrian security force source "told AFP the army still had to recapture the Salma region, a strategic area along the border with Turkey."[323]
According to a Human Rights Watch
report 190 civilians were killed by rebel forces during the offensive, including at least 67 being executed. Another 200 civilians, primarily women and children, were taken hostage.[324][325]

On 6 August, rebels captured
Menagh Military Airbase
after a 10-month siege. The strategic airbase is located on the road between Aleppo city and the Turkish border.[326][327]
On 21 August a chemical attack
took place in the Ghouta region of the Damascus countryside, leading to thousands of casualties and several hundred dead in the opposition-held stronghold. The attack was followed by a military offensive by government forces into the area, which had been hotbeds of the opposition.[328]
On 24 August, rebels captured the town of Ariha. However, government forces recaptured Ariha on 3 September.[329][330]
On 26 August, rebel forces took over the town of Khanasir
in Aleppo Governorate which was the government's last supply route for the city of Aleppo.[331]
On 8 September, rebels led by the al-Nusra Front captured the Christian town of Maaloula, 43 km north of Damascus,[332]
The Syrian Army launched a counterattack a few days later, recapturing the town.[333]

On 18 September, the
Islamic State of Iraq and the Levant
(ISIS) overran the FSA-held town of Azaz in the north. The fighting was the most severe since tensions rose between militant factions in Syria earlier in the year.[334][335]
Soon after ISIS captured Azaz, a ceasefire was announced between the rival rebel groups. However, in early October, more fighting erupted in the town.[336]
On 20 September, Alawite militias including the NDF killed 15 civilians in the Sunni village of Sheik Hadid
in Hama Governorate. The massacre occurred in retaliation for a rebel capture of the village of Jalma, in Hama, which killed five soldiers, along with the seizure of a military checkpoint which killed 16 soldiers and 10 NDF militiamen.[337][338]
In mid-September, the military captured the towns of Deir Salman and Shebaa on the outskirts of Damascus. The Army also captured six villages in eastern Homs.[339]
Fighting broke out in those towns again in October.[340]

On 28 September, rebels seized the Ramtha border post in
Daraa Governorate
on the Syria Jordan crossing after fighting which left 26 soldiers dead along with 7 foreign rebel fighters.[341]
On 3 October, AFP reported that Syria's army re-took the town of Khanasir, which is located on a supply route linking central Syria to the city of Aleppo.[342]
On 7 October, the Syrian Army managed to reopen the supply route between Aleppo and Khanasir.[343]

On 9 October, rebels seized the Hajanar guard post on the Jordanian border after a month of fierce fighting. Rebels were now in control of a swath of territory along the border from outside of Daraa to the edge of Golan Heights.[344]
The same day, Hezbollah and Iraqi Shiite fighters, backed up by artillery, air-strikes and tanks, captured the town of Sheikh Omar, on the southern outskirts of Damascus. Two days later, they also captured the towns of al-Thiabiya and Husseiniya on the southern approaches to Damascus. The capture of the three towns strengthened the government hold on major supply lines and put more pressure on rebels under siege in the Eastern Ghouta area.[345][346]
On 14 October, SOHR reported that rebels captured the Resefa and Sinaa districts of Deir ez-Zor
city, as well as Deir ez-Zor's military hospital.[347]

The Syrian Army along with its allies, Hezbollah and the
al-Abas brigade, launched an offensive on Damascus and Aleppo.[348][349]
On 16 October, AFP reported that Syrian troops recaptured the town of Bweida, south of Damascus. On 17 October, the Syrian government's head of Military Intelligence in Deir ez-Zor Governorate, Jameh Jameh, was assassinated by rebels in Deir ez-Zor city. SOHR reported that he had been shot by a rebel sniper during a battle with rebel brigades.[350]
On 24 October, the Syrian Army retook control of the town of Hatetat al-Turkman, located southeast of Damascus, along the Damascus International Airport road.[351]

On 26 October, Kurdish rebel fighters seized control of the strategic Yarubiya border crossing between Syria and Iraq from al-Nusra in Al Hasakah Governorate.[352]
Elsewhere, in Daraa Governorate, rebel fighters captured the town of Tafas
from government forces after weeks of clashes which left scores dead.[353]
On 1 November, the Syrian Army retook control of the key city of Al-Safira[354]
and the next day, the Syrian Army and its allies recaptured the village of Aziziyeh on the northern outskirts of Al-Safira.[355]
From early to mid-November, Syrian Army forces captured several towns south of Damascus, including Hejeira and Sbeineh. Government forces also recaptured the town of Tel Aran, southeast of Aleppo, and a military base near Aleppo's international airport.[356]

On 10 November, the Syrian Army had taken full control of "Base 80", near Aleppo's airport.[357]
According to the SOHR, 63 rebels,[358]
and 32 soldiers were killed during the battle.[358]
One other report put the number of rebels killed between 60 and 80.[359]
Army units were backed-up by Hezbollah fighters and pro-government militias during the assault.[358]
The following day, government forces secured most of the area around the airport.[360][361]
On 13 November, government forces captured most of Hejeira.[362]
Rebels retreated from Hejeira to Al-Hajar al-Aswad. However, their defenses in besieged districts closer to the heart of Damascus were still reportedly solid.[363]
On 15 November, the Syrian Army retook control of the city of Tell Hassel near Aleppo.[364]
On 18 November, the Syrian troops stormed the town of Babbila.[365]
On 19 November, government forces took full control of Qara.[366]
The same day, the Syrian Army captured al-Duwayrinah.[367]
On 23 November, al-Nusra Front and other Islamist rebels captured the al-Omar oil field, Syria's largest oil field, in Deir al-Zor Governorate causing the government to rely almost entirely on imported oil.[368][369]
On 24 November, rebels captured the towns of Bahariya, Qasimiya, Abbadah, and Deir Salman in Damascus's countryside.[370]
On 28 November, the Syrian Army recaptured Deir Attiyeh.[371]

On 2 December, rebels led by the Free Syrian Army recaptured the historic Christian town of
Ma'loula. After the fighting, reports emerged that 12 nuns had been abducted by the rebels. However, the FSA disputes this and said that the nuns had been evacuated to the nearby rebel held town of
Yabrud
due to the Army shelling.[372][373]
In early December, the Islamic Front seized control of Bab al-Hawa border crossing with Turkey, which had been in hands of FSA.[374]
The groups also captured warehouses containing equipment delivered by the U.S. In response, the U.S. and Britain said they halted all non-lethal aid to the FSA, fearing that further supplies could fall in hands of al-Qaeda
militants.[375]
On 9 December, the Army took full control of Nabek,[376]
with fighting continuing in its outskirts.[272]

Fighting between ISIS and other rebel groups (January–March 2014)[edit]

Tension between moderate rebel forces and ISIS had been high since ISIS captured the border town of
Azaz
from FSA forces on 18 September 2013.[377]
Conflict was renewed over Azaz
in early October[378]
and in late November ISIS captured the border town of Atme
from an FSA brigade.[379]
On 3 January 2014, the Army of the Mujahideen, the Free Syrian Army and the Islamic Front launched an offensive against ISIS
in Aleppo and Idlib governorates. A spokesman for the rebels said that rebels attacked ISIS in up to 80% of all ISIS held villages in Idlib and 65% of those in Aleppo.[380]

By 6 January, opposition rebels managed to expel ISIS forces from the city of Raqqah, ISIS's largest stronghold and capital of the Raqqah Governorate.[381]
On 8 January, opposition rebels expelled most ISIS forces from the city of Aleppo, however ISIS reinforcements from the Deir ez-Zor Governorate
managed to retake several neighborhoods of the city of Raqqah.[382][383]
By mid January ISIS retook the entire city of Raqqah, while rebels expelled ISIS fighters fully from Aleppo city and the villages west of it.

On 29 January, Turkish aircraft near the border fired on an ISIS convoy inside the Aleppo province of Syria, killing 11 ISIS fighters and 1 ISIS emir.[384][385]
In late January it was confirmed that rebels had assassinated ISIS's second in command, Haji Bakr, who was al-Qaeda's military council head and a former military officer in Saddam Hussein's army.[386]
By mid-February, the al-Nusra Front joined the battle in support of rebel forces, and expelled ISIS from the Deir Ezzor Governorate.[387]
By March, the ISIS forces fully retreated from the Idlib Governorate.[388][389]
On 4 March, ISIS retreated from the border town of Azaz and other nearby villages, choosing instead to consolidate around Raqqah in an anticipation of an escalation of fighting with al-Nusra.[390]

On 4 March, the
Syrian Army
took control of Sahel in the Qalamoun region.[391]
On 8 March, government forces took over Zara, in Homs Governorate, further blocking rebel supply routes from Lebanon.[392]
On 11 March, Government forces and Hezbollah
took control of the Rima Farms region, directly facing Yabrud.[393]
On 16 March, Hezbollah and government forces captured Yabrud, after Free Syrian Army fighters made an unexpected withdrawal, leaving the al-Nusra Front to fight in the city on its own.[394]
On 18 March, Israel used artillery against a Syrian Army base, after four of its soldiers had been wounded by a roadside bomb while patrolling Golan Heights.[395]

On 19 March, the Syrian Army captured Ras al-Ain near
Yabrud, after two days of fighting and al-Husn in Homs Governorate, while rebels in the Daraa Governorate captured Daraa prison, and freed hundreds of detainees.[396][397][398]
On 20 March, the Syrian Army
took control of the Krak des Chevaliers
in al-Husn.[398]
On 29 March, Syrian Army took control of the villages of Flitah
and Ras Maara near the border with Lebanon.[399]

On 22 March, rebels took control of the Kesab border post in the Latakia Governorate.[400]
By 23 March, rebels had taken most of Khan Sheikhoun in Hama.[401]
During clashes near the rebel-controlled Kesab border post in Latakia, Hilal Al Assad, NDF leader in Latakia and one of Bashar Al Assad's cousins was killed by rebel fighters.[402][403]
On 4 April, rebels captured the town of Babulin, Idlib.[404]
On 9 April, the Syrian Army took control of Rankous
in the Qalamoun region.[405]
On 12 April, rebels in Aleppo stormed the government-held Ramouseh industrial district in an attempt to cut the Army supply route between the airport and a large Army base. The rebels also took the Rashidin neighbourhood and parts of the Jamiat al-Zahra district.[406]
On 26 April, the Syrian Army took control of Al-Zabadani.[407]
According to SOHR, rebels took control of Tell Ahrmar, Quneitra.[408]
Rebels in Daraa also took over Brigade 61 Base and the 74th battalion.[409]

On 26 April, the FSA announced they had begun an offensive against ISIS in the Raqqah Governorate, and had seized five towns west of Raqqah city.[410]
On 29 April, activists said that the Syrian Army captured Tal Buraq near the town of Mashara in Quneitra without any clashes.[411]
On 7 May, a truce went into effect in the city of Homs, SOHR reported. The terms of the agreement include safe evacuation of Islamist fighters from the city, which would then fall under government control, in exchange for release of prisoners and safe passage of humanitarian aid for Nubul and Zahraa, two Shiite enclaves besieged by the rebels.[412]
On 18 May, the head of Syria's Air Defense, General Hussein Ishaq, died of wounds sustained during a rebel attack on an air defense base near Mleiha the previous day. In Hama Governorate, rebel forces took control of the town of Tel Malah, killing 34 pro-Assad fighters at an army post near the town. Its seizure marked the third time rebels have taken control of the town.[413][414]

Syria held a presidential election in government-held areas on 3 June 2014. For the first time in the history of Syria more than one person was allowed to stand as a presidential candidate.[415]
More than 9,000 polling stations were set up in government-held areas.[416][417]
According to the Supreme Constitutional Court of Syria, 11.63 million Syrians voted (the turnout was 73.42%).[418]
President Bashar al-Assad
won the election with 88.7% of the votes. As for Assad's challengers, Hassan al-Nouri
received 4.3% of the votes and Maher Hajjar
received 3.2%.[419]
Allies of Assad from more than 30 countries were invited by the Syrian government to follow the presidential election,[420]
including Bolivia, Brazil, Cuba, Ecuador, India, Iran, Iraq, Nicaragua, Russia, South Africa and Venezuela.[421][422]
The Iranian official Alaeddin Boroujerdi
read a statement by the group saying the election was "free, fair and transparent".[423]
The Gulf Cooperation Council, the
European Union
and the United States all dismissed the election as illegitimate and a farce.[424][425][426][427]

State employees were told to vote or face interrogation.[428]
On the ground there were no independent monitors stationed at the polling stations.[429][430][431]

It is claimed in an opinion piece that as few as 6 million eligible voters remained in Syria.[432][433]
Due to rebel, Kurdish and ISIS control of Syrian territories there was no voting in roughly 60% of the country.[434][435]

According to the
Syrian Observatory for Human Rights, on 17 July ISIL took control of the Shaar oil field, killing 90 pro-government forces while losing 21 fighters. In addition, 270 guards and government-aligned fighters were missing. About 30 government persons managed to escape to the nearby Hajjar field.[439]
On 20 July, the Syrian Army secured the field, although fighting continued in its outskirts.[440]
On 25 July, the Islamic State took control of the Division 17 base near Raqqah.[441]

On 7 August, ISIL took the Brigade 93 base in Raqqah using weapons captured from their offensive in Iraq. Multiple
suicide bombs
also went off before the base was stormed.[442]
On 13 August, ISIL forces took the towns of Akhtarin
and Turkmanbareh from rebels in Aleppo. ISIL forces also took a handful of nearby villages. The other towns seized include Masoudiyeh,
Dabiq
and Ghouz.

On 14 August, after being captured by the Al Nusra Front, the
Free Syrian Army
commander Sharif As-Safouri admitted to working with Israel and receiving anti-tank
weapons from Israel and FSA soldiers also received medical treatment. It is possible this confession was obtained under duress. [443]
On 14 August, the Syrian Army
as well as Hezbollah
militias retook the town of Mleiha in Rif Dimashq Governorate. The Supreme Military Council of the FSA denied claims of Mleiha's seizure, rather the rebels have redeployed from recent advances to other defensive lines.[444]
Mleiha has been held by the Islamic Front. Rebels had used the town to fire mortars on government held areas inside Damascus.[445][446]

Meanwhile, ISIL forces in Raqqah were launching a siege on
Tabqa airbase, the Syrian government's last military base in Raqqah. Kuwaires airbase in
Aleppo
also came under fierce attack by ISIL.[447][448]
On 16 August, there were reports that 22 people were killed in the village of Daraa
by a car bomb
outside a mosque. The bomb was thought to be detonated by ISIS. Also on 16 August, the Islamic State seized the village of Beden in Aleppo Governorate from rebels.[449][450]

On 17 August, SOHR said that in the past two weeks ISIL jihadists had killed over 700 tribal members in oil-rich
Deir ez-Zor Governorate.[451]

On 19 August, Abu Abdullah al-Iraqi, a senior figure in ISIL who had helped prepare and plan car and suicide bombs across Syria, Lebanon, and Iraq was killed. Some reports said that he was killed by Hezbollah fighters. There were also several reports that he was killed by the Syrian Army in the Qalamoun region, near the border with Lebanon.[452][453][454]

On 19 August, American journalist
James Foley
was executed by ISIL, who claimed it was in retaliation for the United States operations in Iraq. Foley was kidnapped in Syria in November 2012 by Shabiha
militia.[455]
ISIL also threatened to execute Steven Sotloff, who was kidnapped at the Syrian-Turkish border in August 2013.[456]
There were reports ISIS captured a Japanese national, two Italian nationals, and a Danish national as well.[457]
At least 70 journalists have been killed covering the Syrian war, and more than 80 kidnapped, according to the Committee to Protect Journalists.[458]

On 22 August, the
al-Nusra Front
released a video of captured Lebanese soldiers and demanded that Hezbollah withdraw from Syria under threat of their execution.[459]

On 23 August, the Tabqa airbase was no longer encircled by ISIL fighters and the Syrian Army had taken back the M-42 Highway from ISIL fighters, which leads to the city of
Salamiyah
in the Hama Governorate.[460]
Also in Raqqah, the Syrian Army took control of the town of Al-Ejeil.[461][462]
ISIL reportedly sent reinforcements from Iraq to the governorate of Raqqah. The Syrian Observatory for Human Rights said at least 400 ISIL fighters had also been wounded in the previous five days in clashes with the Syrian Army and National Defence Force
in Raqqah alone.[461][463]
At the same time, several senior UK and US figures urged Turkey to stop allowing ISIL to cross the border to Syria and Iraq.[464]
It was around this time that the Americans realized that the Turks had no intention of sealing their side of the border, and so Washington decided to work with the Syrian Kurds to close off the border on the Syrian side.[465]
A year later, with the Kurds in control of most of the Turkey–Syria border, and the Syrian army advancing under Russian air support to seal the remainder, the situation was causing great ructions in Ankara.[466]

On the following day, the Islamic State seized Tabqa airbase from government forces.[467]
The battle for the base left 346 ISIL fighters and 195 soldiers dead.[468]
Prisoners taken by ISIL forces were executed and a video from the mass killing was posted on YouTube. The death toll varied from 120 to 250.[469]

On 26 August, the Syrian Air Force carried out airstrikes against ISIL targets in the Governorate of Deir ez-Zor. This was the first time the Syrian Army attacked them in
Deir ez-Zor
as the Syrian Army pulled out of Raqqah and shifted to Deir ez-Zor in a bid to seize its oil and natural gas resources as well as strategically splitting ISIL territories.[470][471]

American jets began bombing ISIL in Syria on 23 September 2014, raising U.S. involvement in the war-torn country. At least 20 targets in and around Raqqah were hit, the opposition group Syrian Observatory for Human Rights said. Foreign partners participating in the strikes with the United States were Bahrain, Saudi Arabia, the United Arab Emirates, Qatar and Jordan. The U.S. and "partner nation forces" began striking ISIL targets using fighters, bombers and Tomahawk missiles, Pentagon spokesman Rear Adm. John Kirby said.[472]

The United States also attacked a specific faction of al-Nusra called the
Khorasan Group, who according to the United States had training camps and plans for attacking the United States in the future.[475]

For its part, Turkey launched an official request to the U.N. for a no-fly zone over Syria.[476]

The same day, Israel shot down a Syrian warplane after it entered the Golan area from Quneitra.[477]

Within 36 hours from 21 October, the Syrian air force carried out over 200 airstrikes on rebel-held areas across Syria and US and Arab jets attacked IS positions around Kobanî. Syrian Information Minister
Omran al-Zoubi
said the YPG forces in Kobanî had been provided with military and logistical support.[479][480]
Syria reported that its air force had destroyed two fighter jets being operated by IS.[481]

By 26 January, the Kurdish YPG forced ISIL forces in Kobanî to retreat,[482]
thus fully recapturing the city.[483]
The U.S. confirmed that the city had been cleared of ISIL forces on 27 January,[484]
and ISIL admitted defeat in Kobanî city three days later, although they vowed to return.[485]

Since early 2015, opposition military operations rooms based in Jordan and Turkey began increasing cooperation,[491]
with Saudi Arabia and Qatar also reportedly agreeing upon the necessity to unite opposition factions against the Syrian government.[492]

In late October 2014, a conflict erupted between the al-Nusra Front on one side and the western-backed
SRF
and Hazzm Movement
on the other (Al-Nusra Front–SRF/Hazzm Movement conflict). ISIL reportedly reinforced al-Nusra. By the end of February 2015 al-Nusra had defeated both groups, captured the entire
Zawiya Mountain
region in Idlib province and several towns and military bases in other governorates, and seized weapons supplied by the CIA
to the two moderate groups.[493][494]
The significant amount of weapons seized included a small number of BGM-71
anti-tank missiles similar to weapons systems al-Nusra Front had previously captured from government stockpiles such as French MILANs, Chinese
HJ-8s
and Russian 9K111 Fagots.[495]
Reuters reported that this represented al-Nusra crushing pro-Western rebels in the north of the country.[496]
According to FSA commanders in northern Syria, however, the elimination of Harakat Hazm and the SRF was a welcome development due to the leaders of those factions allegedly involved in corruption.[497]
The Western-backed 30th Division
of the FSA remained active elsewhere in Idlib.[498]

By 24 March 2015 the al-Nusra Front dominated most of Idlib province, except for the government-held provincial capital,
Idlib, which they had encircled on three sides along with its Islamist allies.[499]
On 28 March a joint coalition of Islamist forces, the Army of Conquest, captured Idlib.[500][501][502]
This left the north largely taken over by Ahrar ash-Sham, al-Nusra Front and other Islamist rebels, with the south of the country becoming the last significant foothold for the mainstream, non-jihadist opposition fighters.[503]

On 22 April,
a new rebel offensive
was launched in the north-west of Syria and by 25 April, the rebel coalition Army of Conquest
had captured the city of Jisr al-Shughur.[504]
At the end of the following month, the rebels also seized the Al-Mastumah
military base,[505]
and Ariha, leaving government forces in control of tiny pockets of Idlib, including the Abu Dhuhur military airport.[506]
In addition, according to Charles Lister (Brookings Doha Center), the Army of Conquest coalition was a broad opposition effort to ensure that the Al-Qaeda-affiliated al-Nusra Front was contained, with the rearguard involvement of Western-backed factions being regarded as crucial.[497]
Still, according to some, the FSA in northern Syria had by this point all but dissipated. Many of the moderate fighters joined more extremist organizations, such as Ahrar ash-Sham, the largest faction in the Army of Conquest, which led to the subsequent rise of the Islamist Army of Conquest coalition.[507]

Rebel advances led to government and Hezbollah morale plunging dramatically.[508]
In north-west Syria these losses were countered by a Hezbollah-led offensive in the Qalamoun mountains north of Damascus, on the border with Lebanon, that gave Hezbollah effective control of the entire area.[509]

On 21 May, ISIL took control of
Palmyra, a UNESCO World Heritage Site, after eight days of fighting.[510]
The jihadists also captured the nearby towns of Al-Sukhnah and Amiriya, as well as several oil fields.[511]
Following the capture of Palmyra, ISIL conducted mass executions in the area, killing an estimated 217–329 government civilian supporters and soldiers, according to opposition activists.[512][513][514]
Government sources put the number of killed at 400–450.[515]

By early June, ISIL reached the town of Hassia, which lies on the main road from Damascus to Homs and Latakia, and reportedly took up positions to the west of it, creating a potential disaster for the government and raising the threat of Lebanon being sucked further into the war.[516]

On 25 June, ISIL launched two offensives. One was a surprise diversionary attack on Kobanî, while the second targeted government-held parts of Al-Hasakah city.[517]
The ISIL offensive on Al-Hasakah displaced 60,000 people, with the UN estimating a total of 200,000 would be displaced.[518]

In July 2015, a raid by U.S. special forces on a compound housing the Islamic State's "chief financial officer",
Abu Sayyaf, produced evidence that
Turkish
officials directly dealt with ranking ISIS members.[519]

ISIS captured
Qaryatayn
city from the government on 5 August 2015.[520]

Australia joined the bombing of ISIL in Syria in mid September, an extension of their efforts in Iraq for the last year.[521]

Russian intervention and government offensive (30 September 2015–February 2016)[edit]

On 30 September 2015,[525]
at an official request by the Syrian government headed by President Bashar al-Assad,[526]
the Russian Aerospace Forces
began a sustained campaign of air strikes against both ISIL and the anti-Assad FSA.[527][528]
Initially, the raids were conducted solely by Russian aircraft stationed in the Khmeimim base
in Syria. Shortly after the start of the Russian operation, U.S. president Barack Obama was reported to have authorized the resupply of Syrian Kurds and the Arab-Syrian opposition, Obama reportedly emphasizing to his team that the U.S. would continue to support the Syrian opposition now that Russia had joined the conflict.[529]

On 7 October 2015, Russian officials said the ships of the
Caspian Flotilla
had earlier that day fired 26 sea-based cruise missiles
at 11 ISIL targets in Syria destroying those and causing no civilian casualties.[522]
On the same day, the Syrian government′s ground forces launched a ground offensive[530][531]
that in the following few days succeeded in recapturing some territory in northern Hama Governorate, close to the government's coastal heartland in the west of the country.[532]

On 8 October 2015, the U.S. officially announced the end of the Pentagon’s $500 million program to train and equip Syrian rebels in an acknowledgment that the program had failed[533]
(other covert and significantly larger[534]
CIA programs to arm anti-government fighters in Syria continue[535][536]).

Two weeks after the start of the Russian campaign in Syria,
The New York Times
opined that with anti-government commanders receiving for the first time bountiful supplies of U.S.-made anti-tank missiles and with Russia raising the number of airstrikes against the government’s opponents that had raised morale in both camps, broadening war objectives and hardening political positions, the conflict was turning into an all-out proxy war
between the U.S. and Russia.[534]

The foreign ministers of Russia, the U.S., Saudi Arabia, and Turkey in Vienna, before a four-way discussion focused on Syria, 29 October 2015

At the end of October 2015, the U.S. Secretary of Defense
Ashton Carter
signalled a shift in the strategy of the U.S.-led campaign saying there will be more air strikes and ruling in the use of direct ground raids, the fight in Syria concentrating mostly on Raqqah.[545]

On 30 October and two weeks later,
Syria peace talks
were held in Vienna, initiated by the United States, Russia, Turkey and Saudi Arabia, in which on 30 October Iran participated for the first time in negotiations on Syrian settlement.[546]
The participants disagreed on the future of Bashar Assad.

On 10 November 2015, the Syrian government forces completed the
operation to break through
the Islamic State insurgents′ blockade of the Kweires air base in Aleppo Province, where government forces had been under siege since April 2013.[547]

In mid-November 2015, in the wake of the
Russian plane bombing over Sinai
and the Paris attacks, both Russia[548][549]
and France significantly intensified their strikes in Syria, France closely coordinating with the U.S. military.[550]
On 17 November, Putin said he had issued orders for the cruiser
Moskva
that had been in eastern Mediterranean since the start of the Russian operations to "work as with an ally",[549][551][552]
with the French naval group led by flagship Charles De Gaulle
that had been on her way to eastern Mediterranean since early November.[553]
Shortly afterwards, a Russian foreign ministry official criticised France′s stridently anti-Assad stance as well as France′s air strikes at oil and gas installations in Syria[554]
as apparently designed to prevent those from returning under the Syrian government′s control; the Russian official pointed out that such strikes by France could not be justified as they were carried out without the Syrian government′s consent.[555][556]
In his remarks to a French delegation that included French parliamentarians, on 14 November, President Bashar Assad sharply criticised France′s as well as other Western States′ actions against the Syrian government suggesting that French support for Syrian opposition forces had led to the Islamic State-claimed attacks in Paris.[557][558]

On 19 November 2015, U.S. President Barack Obama, speaking of the Vienna process, said he was unable to "foresee a situation in which we can end the civil war in Syria while Assad remains in power"; he urged Russia and Iran to stop supporting the Syrian government.[559][560]

On 20 November 2015, the UN Security Council, while failing to invoke the UN's
Chapter VII, which gives specific legal authorisation for the use of force,[561]
unanimously passed Resolution 2249
that urged UN members to "redouble and coordinate their efforts to prevent and suppress terrorist acts committed specifically by ISIL also known as Da’esh as well as ANF, and all other individuals, groups, undertakings, and entities associated with Al-Qaida, and other terrorist groups, as designated by the United Nations Security Council, and as may further be agreed by the International Syria Support Group
(ISSG) and endorsed by the UN Security Council".[562]
The adopted resolution was drafted by France and co-sponsored by the UK[563]
the following day after Russia introduced an updated version of its previously submitted draft resolution that was blocked by the Western powers as seeking to legitimise Assad’s authority.[564][565]

On 24 November 2015, Turkey
shot down a Russian warplane
that allegedly violated Turkish airspace and crashed in northwestern Syria, leading to the Russian pilot's death.[566]
Following the crash, it was reported that Syrian Turkmen
rebels from Syrian Turkmen Brigades
attacked and shot down a Russian rescue helicopter, killing a Russian naval infantryman.[566]
A few days after, Russian aircraft were reported to have struck targets in the Syrian town of Ariha
in Idlib province that was controlled by the Army of Conquest
causing multiple casualties on the ground.[567][568]

On 7 December 2015, the government of Syria announced that US-led coalition warplanes had fired nine missiles at its army camp near Ayyash,
Deir al-Zour province, on the evening prior, killing three soldiers and wounding 13 others; three armoured vehicles, four military vehicles, heavy machine-guns and an arms and ammunition depot were also destroyed.[572]
The government condemned the strikes, the first time the government forces would be struck by the coalition,[573]
as an act of "flagrant aggression"; the coalition spokesman denied it was responsible.[572]
Anonymous Pentagon officials alleged later in the day that the Pentagon was "certain" that a Russian warplane (presumably a TU-22 bomber) had carried out the attack.[574][575]
The claim was denied by the Russian military spokesman who noted that four Western coalition warplanes (other than U.S.) had been spotted over the Deir az-Zor area in Syria on 6 December.[576]

On 14 December 2015, Russia's government news media reported that the Syrian government forces retook a
Marj al-Sultan
military airbase east of Damascus that had been held by Jaysh al-Islam.[577]

The
UN resolution 2254
of 18 December 2015 that endorsed the ISSG′s transitional plan but did not clarify who would represent the Syrian opposition, while condemning terrorist groups like ISIL and al-Qaeda; it made no mention of the future role of Syrian President Bashar Assad.[578][579]

On 12 January 2016, the Syria government announced that its army and allied forces had established "full control" of the strategically situated town of
Salma, whose pre-war population was predominantly Sunni,[580]
in the northwestern province of Latakia, and continued to advance north.[581][582]

On 16 January 2016, ISIL militants
launched raid
on government-held areas in the city of Deir ez-Zor
and killed up to 300 people.[583]
Counter-strikes by Russian Air Force
fighter jets, in support of Syrian army forces, were reported to take back the areas.[584]

On 21 January 2016, Russia′s activity presumably aimed at setting up a new base in the government-controlled
Kamishly Airport
was first reported;[585][586][587]
the northeastern town of Al-Qamishli
in the Al-Hasakah Governorate
had been largely under the Syrian Kurds′ control since the start of the Syrian Kurdish–Islamist conflict
in the governorate of Al-Hasakah in July 2013. Similar activity by the U.S. forces was suspected in the Rmeilan Airbase in the same province, 50 km away from the Kamishly Airport; the area is likewise controlled by the US-backed Kurdish People's Protection Units (YPG).[587][588]

On 24 January 2016, the Syrian government announced its forces, carrying on with their
Latakia offensive, had seized the predominantly Sunni-populated town of
Rabia, the last major town held by rebels in western Latakia province; Russian forces were said to have played an important role in the recapture.[589]
The capture of Rabia was said to threaten rebel supply lines from Turkey.[589][590]

A few days after, the
battle of al-Hasakah
began. On 22 August, the Kurdish YPG, having captured Ghwairan, the only major Arab neighbourhood in Hasaka that had been in government hands, launched a major assault to seize the last government-controlled areas of the northeastern Syrian city of Hasaka, after a Russian mediation team failed to mend the rift between the two sides;[603]
the next day the capture of the city was completed.[604]
A few days prior, the Pentagon admonished the Syrian government against "interfering with coalition forces or our partners" in that region, adding that the U.S. had the right to defend its troops.[605]

On 24 August 2016, Turkey′s armed forces invaded Syria in the
Jarablus
area controlled by ISIL starting what the Turkish president called the Operation Euphrates Shield, aimed against, according to his statement, both the IS and Kurdish ″terror groups that threaten our country in northern Syria″.[606][607][608]
The Syrian government denounced the intervention as a "blatant violation of its sovereignty" and said that "fighting terrorism isn’t done by ousting ISIS and replacing it with other terrorist organizations backed directly by Turkey".[609]
The PYD leader Salih Muslim
said that Turkey was now in the "Syrian quagmire" and would be defeated like IS.[607][610]
Speaking in Ankara the same day, US vice president Joe Biden
indirectly endorsed Turkey′s move and said that the U.S. had made it clear to the Syrian Kurdish forces that they should move back east across the Euphrates, or lose US support.[611][612]

As Turkish troops and the Turkish-aligned Syrian rebels took control of Jarablus and moved further south towards the Syrian town of Manbij, they clashed with the Kurdish YPG, which led the U.S. officials to voice concern and issue a warning to both sides.[613][614]
On 29 August, U.S. Defense Secretary Ash Carter
specified that the U.S. did not support Turkey′s advance south of Jarablus.[615]
The warning as well as an announcement made by the U.S. of a tentative ceasefire between the Turkish forces and the Kurds in the area of Jarablus were promptly and angrily dismissed by Turkey′s officials.[616][617]
However, combat between the Turkish forces and the SDF died down, and instead Turkish forces moved West to confront IS.[618]
In the meantime the SDF, including Western volunteers, continued to reinforce Manbij.[619][620]

At sunset on 12 September 2016, a
U.S.-Russian brokered cease-fire
came into effect.[621]
Five days later, the U.S. and other coalition members′ jets bombed Syrian Army positions
near Deir ez-Zor—purportedly by accident, but with Russia contending that it was intentional—killing at least 62 Syrian troops that were fighting ISIL militants.[622]
Shortly after, the ceasefire broke down, and on 19 September the Syrian Army declared to no longer observe the truce.[623]
Also on 19 September, an aid convoy in Aleppo was attacked
with the U.S. coalition blaming the Russian and Syrian governments for the attack and these same governments denying these accusation and instead blaming terrorists for the attack.

On 22 September, the Syrian army declared a
new offensive in Aleppo.[624]
The offensive succeeded on 14 December, when the final Rebel stronghold in Aleppo was recaptured by the Syrian government followed by a ceasefire agreement.[625][626]

On 26 October 2016 US Defence Secretary
Ash Carter
said that an offensive to retake Al-Raqqah from IS will begin within weeks.[627]

A UN fact-finding mission
was requested by member states to investigate 16 alleged chemical weapons attacks. Seven of them have been investigated (nine were dropped for lack of "sufficient or credible information") and in four cases the UN inspectors confirmed use of sarin
gas.[628]
The reports, however, did not blame any party for using chemical weapons.[629]
Many countries, including the United States and the European Union have accused the Syrian government of conducting several chemical attacks, the most serious of them being the 2013 Ghouta attacks. Before this incident UN human rights investigator
Carla del Ponte
who has been investigating sarin gas use in Syria, in May 2013 accused the opposition of the 'regime' for using sarin gas and in her interview she said: "According to the testimonies we have gathered, the rebels have used chemical weapons, making use of sarin gas".[630]
Following the 2013 Ghouta attacks and international pressure, the destruction of Syria's chemical weapons
began. In 2015 the UN mission disclosed previously undeclared traces of sarin compounds[disputed–
discuss]
in a "military research site".[631]

Many nations including but not limited to Syria, the United States, Russia, China, Israel and India are not parties to the
Convention on Cluster Munitions, and do not recognize the ban on the use of cluster bombs. The Syrian Army began using
cluster bombs
in September 2012. Steve Goose, director of the Arms division at Human Rights Watch said "Syria is expanding its relentless use of cluster munitions, a banned weapon, and civilians are paying the price with their lives and limbs", "The initial toll is only the beginning because cluster munitions often leave unexploded bomblets that kill and maim long afterward."[632]

Russian
Thermobaric weapons, also known as "fuel-air bombs", have been used by the government side during the Syrian civil war. Russia's lethal thermobaric rocket launchers have become a game changer in Syria. One Buratino launcher "can obliterate a roughly 200m by 400m area with a single salvo".[633]
Since 2012, rebels have said that the Syrian Air Force (government forces) is using thermobaric weapons against residential areas occupied by the rebel fighters, such as during the Battle of Aleppo
and also in Kafr Batna.[634]
A panel of United Nations human rights investigators reported that the Syrian government used thermobaric bombs against the strategic town of Qusayr in March 2013.[635]
In August 2013, the BBC reported on the use of napalm-like incendiary bombs on a school in northern Syria.[636]
On 2 December 2015, The National Interest reported that Russia was deploying the TOS-1
Buratino multiple rocket launch system to Syria, which is "designed to launch massive thermobaric charges against infantry in confined spaces such as urban areas."[637]

Several types of
anti-tank missiles
are in use in Syria. Russia has sent 9M133 Kornet, third-generation anti-tank guided missiles to the Syrian Government whose forces have used them extensively against armour and other ground targets to fight Jihadists and rebels.[638][639][640]
U.S.-made BGM-71 TOW
missiles are one of the primary weapons of rebel groups and have been primarily provided by the United States and Saudi Arabia.[641]
The U.S. has also supplied many tonnes of Eastern European sourced 9K111 Fagot
launchers and warheads to Syrian rebel groups under its Timber Sycamore
program.[642]

A number of sources have emphasized that as of at least late 2015/early 2016 the Syrian government was dependent on a mix of volunteers and militias[643][644]
rather than the Syrian Armed Forces. According to one Syrian Army defector (Khaled al-Shami) speaking in November 2015, “one important thing to realise is that there is no Syrian Army anymore, it is just militias, mostly Iranians and Lebanese.”[645]

The funeral procession of Syrian General Mohammed al-Awwad
who was assassinated in Damascus in 2012

Before the uprising and war broke out, the Syrian Armed Forces were estimated at 325,000 regular troops, of which 220,000 were 'army troops' and the rest in the navy, air force and air defence force. There were also approximately 280,000–300,000 reservists. Since June 2011, defections of soldiers have been reported. By July 2012, the
Syrian Observatory for Human Rights
estimated that tens of thousands of soldiers had defected, and a Turkish official estimated that 60,000 soldiers had defected.

The Syrian government enjoys high levels of support in certain areas under its control; according to a poll organised by British ORB International, up to 73% of the population in government-controlled areas support the government effort.[646]

The Syrian NDF was formed out of pro-government militias. They receive their salaries, and their military equipment from the government,[647][648]
and number around 100,000 troops.[649][650]
The force acts in an infantry role, directly fighting against rebels on the ground and running counter-insurgency operations in coordination with the army, who provides them with logistical and artillery support. The force has a 500-strong women's wing called "Lionesses of National Defense" which operates checkpoints.[651]
NDF members, like regular army soldiers, are allowed to loot
the battlefields (but only if they participate in raids with the army), and can sell the loot for extra money.[647]

The
Shabiha
are unofficial pro-government militias drawn largely from Syria's Alawite
minority group. Since the uprising, the Syrian government has been accused of using shabiha
to break up protests and enforce laws in restive neighborhoods.[652]
As the protests escalated into an armed conflict, the opposition started using the term shabiha
to describe civilians they suspected of supporting Bashar al-Assad and the Syrian government and clashing with pro-opposition demonstrators.[653]
The opposition blames the shabiha
for the many violent excesses committed against anti-government protesters and opposition sympathizers,[653]
as well as looting and destruction.[654][655]
In December 2012, the shabiha
were designated a terrorist organization by the United States.[656]

Bassel al-Assad
is reported to have created the shabiha
in the 1980s for government use in times of crisis.